Finding the Fourth Proportional to 10,885.62, 16,326.89 and 3,489.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,885.62 : 16,326.89 = 3,489.12 : x
2. Step 2: Convert to fraction form
   10,885.62/16,326.89 = 3,489.12/x
3. Step 3: Cross multiply
   10,885.62x = 16,326.89 × 3,489.12
4. Step 4: Simplify right side
   10,885.62x = 56,966,483.45
5. Step 5: Solve for x
   x = 56,966,483.45/10,885.62
6. Step 6: Final answer
   x = 5,233.19